Descaling and brushing machine, especially for rough-drawn wire



De. 9, 1952 J. PEIGNIER DESCALING AND BRUSHING MACHINE, ESPECIALLY'FOR ROUGH-DRAWN WIRE.

Filed Oct. 12, 1949 Patented Dec. 9, 1952 DESCALING AND BR-USHING MACHINE,

ESPECIALLY FOR ROUGH-DRAWN WIRE Jean Peignier, Bigny, France, assignor to Societe Metallurgique dc Gorcy, Paris, France, a. body corporate of France Application October 12, 1949, Serial No. 120,936 In France October 18, 1948 4 Claims.

Machines have already been suggested for descaling and brushing rough hot-rolled or extruded wire, so as to provide for directly and continuously passing, such wire stock through the draw-bench In such machines, which were interposed between the wire reel drum and the draw-bench, the wire was subjected to successive bending steps intwo perpendicular planes While passing through the grooves of two rollers or frictionwheels having their axes of rotation at right angles to each other. With the coating of scale thus broken up, it was then merely necessais to subject the wire to a brushing action in order to strip it of all traces of oxide.

It is the object of this invention to provide a machine of such kind essentially characterised by the fact that both the de-scaling wheels and the brushing mechanism are operated by the feed movement of the wire as said wire is subjected to the pull of the draw-bench. Said machine accordingly will not require the use of an individual auxiliary power-plant therefor or of a drive-transmission means receiving its movement from the general power-supply of the workshop.

In the accompanying drawings, given merely by way of example:

Fig. 1 is a vertical section of the mechanism of a de-scaling machine embodying the essential features of the invention, while Fig. 2 is a plan view of the ale-scaling head thereof shown separately.

The machine forming the subject matter of this invention is so designed as first to achieve a rough preliminary de-scaling effect by mechanically breaking up the oxide layer coating the wire, then, in a finishing step, to remove any particles of said layer which may yet adhere to said wire.

To that end, the wire I issuing from the reel is fed over a pair of rollers or wheels, 2, 3 mounted on axes at right angles to each other. The wire is accordingly subjected to temporary deformation in two different planes. The scale, which does not possess a sufiiciently high tensile elongation to withstand such deformation, breaks up and falls away. There only remain over the surface of the wire small particles of scale clinging thereto and which will be removed in the subsequent brushing step.

For this purpose, the wire is fed through a pair of metal brushes. Said brushes are of the flanged or disk type and operate in a plane normal to their axis of rotation which in turn is arranged perpendicularly to the wire. The brushes are arranged on opposite sides of the wire, so that the latter will travel between the parallel planes of friction defined by the ends of the metallic bristles with which the brushes journalled in bearings ll] of the machine frame l I. The hub 9 has secured thereon a drive member or pulley l2 which according to the invention is to be actuated by the feed motion of the wire I. To this end, the rotation of the vertical shaft of the de-scaling wheel 2 is transmitted, for instance as shown by way of the bevel gearing l3, shaft I4 and the belt transmission including pulleys l5 and I2 and. belt [6, to the hub 9.

. Rotation of the casing 8 is also used to effect rotation of the brushes 6, 1 about their axes 4, 5. Such a planetary-gear like movement may,

by way of example, be obtained as shown by the rolling frictional engagement of cone members l1, l8 rigid with the shafts 4, 5 of brushes 6, l with the common fixed cone member [9 rigid with the machine frame II and the geometrical axis of revolution of which coincides with the wire I.

As a result of the above arrangement the two brushes 6, 'l are rotated in reverse directions, and the brushing stresses exerted on the wire 1 balance and cancel each other out. The wire is accordingly not subjected to stress and remains in a proper centred condition.

The above-described device operates as follows:

Upon the draw-bench being started in operation, the wire I is fed forward and the de-scaling apparatus is therefore caused to operate. Since the rate of rotation of the casing 8 carrying the brushes '5, l is in a fixed ratio to that of the de-scaling wheel 2, each of the pair of brushes 5, 7 will operate to clean a small peripheral area of the wire I fed past it, said area thus describing a helical surface. The system is so designed that the pitch of the helix will be less than the diameter of the brushes 6. 1. Moreover since the brushes 6, l are angularly displaced from each other, the net result is similar to what would occur were the second brush arranged on the same side of wire I as the first brush but displaced forwardly with respect to said first brush by an amount equivalent to one half the pitch of the helix. As a result uniform brushing action is obtained throughout the surface of the wire. The brushing step is effected as shown within a sealed enclosing housing 20 adapted to prevent any oxide particles from being thrown out.

On completion of the brushing. step the wire I is practically free of scale and the mechanical cleaning operation thus carried out affords a surface finish comparable with any that may beobtained through the use of a chemical pickling treatment, without involving any of the drawbacks of the latter.

It will thus be seen that the above-described apparatus makes it possible to supply a drawbench directly with rough-drawn wire.

It will of course be understood that various structural modifications may be made in the ex emplary embodiment described and illustrated without exceeding the scope of the invention.

What: I claimiis 1. In a Wire de-scaIi-ng machine, a frame having an aperture for receiving the wire to be threaded, a casing having a hub rotatably mounted in said frame, said hub having an axial bore in alignment with the aperture in said frame to permit passage of the Wire therethrough, a pair of brushes having shafts rotatably mounted in said casing transversely of the axis of said bore, thev bristles of said brushes being oppositely disposed in suchv manner that the plane of juncture between all the bristle ends of said brushes coincides with. the axis of said bore, whereby to permit. passage of the. wire between the two opposed faces of the brushes, and means for rotating said brushes sy'nchror'rouslywith themovement of said wire-between said brushes.

2. In. a wire de-scaling machine, a frame hav ing an. aperture for receiving the wire to be threaded. acasing having a hub rotatably mounted in. said frame, said hubhaving an axial bore in alignment with the aperture in said frame to permit passage of the wire therethrough, a pair of brushes having. shafts rotatably mounted in said casing transversely 'of the axis of said bore, the. bristles. of said brushes being oppositely disposed; in such manner that the. plane of juncture between, all the bristle ends of said brushes coincide's: with the axis of said bore, whereby to permit passage of the wire between the. two opposed faces of the brushes, and means for rotating said.

brushes and said. hub synchronously with the movement of, said wire between said brushes.

3-.v In a wire de-scaling machine,v a frame having an aperture. for receiving the wire to be threaded, a casing having a hub rotatably mounted in said frame, said hub having an axial bore in alignment with the aperture in said frame to permit passage of the wire therethrough, a pair of brushes having shafts rotatably mounted in said casing transversely of the axis of said bore, the bristles of said brushes being; oppositely disposed in such manner that the plane of juncture between the bristle ends of said brushes coincides with the axis of said bore, whereby to permit passage of the wire between the two opposed faces of the brushes, transmission elements secured to the shafts of said brushes for rotating the same, a drum engaged by the wire in its travel with respect to said brushes whereby the movement of the wire rotates the drum, and means connecting said drum with said transmission elements whereby to rotate said brushes synchronously with the movement of said wire.

4. In a wire de-scaling machine, a frame having an aperture for receiving the wire to be threaded, a casing having a hub rotatably mounted in said frame, said hub having an axial bore in alignment with the aperture in said frame to perm-it passage of the wire therethrough, a pair of brushes hav ing shafts rotatably mounted in said'casing transversely of the axis of said bore, the bristles of said brushes being oppositely disposed in such manner that the plane of juncture between the bristle ends of said brushes coincides with the axis of said bore, whereby to permit passage of the wire between the two opposed faces of the brushes, transmission elements secured to the shafts of said brushes for rotating the same, a fixed surface engageable by said transmission elements to afford traction thereto upon rotation of said hub and elements whereby said transmission elements are rotated upon rotation of said hub, a drum engaged by the wire in its travel with respect to said brushes whereby the movement of the wire rotates the drum, and means connecting said drum with said hub whereby torotate said hub synchronously with the movement of said Wire.

JEAN PEIGNIER.

REFERENCES CITED The following references are of record in 'the file of this patent:

UNITED STATES PATENTS 

